LOCATING AND PLANNING POULTRY HOUSES 



21 



temperature drops suddenly in win- 

 ter, may lead to more or less serious 

 consequences. As a m'eans of secur- 

 ing ventilation without the necessity 

 for making such adjustment, louvered 

 ventilators (shown in Fig. 35) are 

 recommended by the Missouri State 

 Poultry Experiment- Station. These 

 ventilator openings are adapted in 

 size to the dimensions of the house. 

 For one having four hundred square 

 feet of floor space and accommodat- 

 ing one hundred to one hundred and 

 twenty-five hens, the Missouri Sta- 

 tion recommends four ventilators 

 each three feet square. The hori- 

 zontal slats are 1x6 inches, set at an 

 angle of forty-five degrees. The dis- 

 tance between each of the slats is one and one-half inches. 



It is claimed for these shutters that the storm will 

 not beat in, while ventilation is unobstructed at all times. 

 Ir practical use, however, it has been found that snow 



will sift through un- 

 der some conditions 

 and in exposed loca- 

 tions there is trou- 

 ble from drafts, for 

 which reason the 

 openings sometimes 

 are fitted with mus- 

 lin shutters for win- 

 ter use. 



As a means of 

 securing the ad- 

 vantages of the Mis- 

 souri shutter with- 

 out the above-noted 

 objections, the Poul- 

 try Department at 

 Cornell University 

 has originated the 

 Cornell Wind Baf- 

 fler, illustrated in 

 Fig. 36. In a house 

 having approximate- 

 ly five hundred 

 square feet of floot 

 space, three of these 

 bafflers are recom- 

 mended, making 

 them three feet deep 

 and cutting the slats 

 27% inches long. 



ENLARGED C*oss SECTION Secure the slats in 

 place by nailing 

 them through the 

 side pieces, using 

 No. 5 finishing nails. 

 The bafflers, after 

 they are made, are 

 slipped into open- 

 ings between studs 

 suitably spaced and 

 are held in place by 

 a few small nails. 



The following bill 

 FIG. 33 CROSS SECTION OF , , , 



SHUTTER OPENING O* lumber will sup- 



Allow siding to overlap stud one ply material for 

 inch on each side to make a tight . u , , rr , 



joint around shutter. three wind bafflers 



PIG. 34 LAYING HOUSE WITH DIVIDED SHUTTERS 

 Photo from University of California. 



of the dimensions just noted, which will provide sufficient 

 ventilation for a house 16x30 feet. 



11 pieces, ^ inch x 3 inch, 16 feet long. 



6 pieces, ^ inch x \y 2 inch, 16 feet long. 



1 piece, 9-16 inch x 4 inch, 10 feet long. 



1 piece, 9-16 inch x 4 inch, 12 feet long. 



One serious objection to both the Missouri shutter 

 and the Cornell wind baffler is that neither one admits 

 much light, for which reason it is necessary to provide 

 considerably more window space than is required where 

 ri;uslin shutters are used. 



Rear Wall Ventilators 



In poultry houses that are equipped with muslin 

 fronts or slatted openings, no other ventilation is required, 

 except in hot weather, when rear ventilators, such as are 

 shown in Fig. 37, page 22, will be found decidedly 

 helpful. These ventilators extend the entire length of 

 the building, close up under the eaves, and in the south 

 may open directly into the room and may be made as 

 much as twelve inches wide. The perches, however, 

 should be far enough below the opening so that the 

 fowls on the roost will not be in a direct draft. In the 

 north this opening is made four to eight inches wide, 

 and the wall and ceiling about the perches should be 

 ceiled as shown. The ceiling boards should be of sound 

 tongue-and-grooved stock and should extend from the 

 underside of the droppings platform up the rear wall 

 and along the rafters to a point twelve to eighteen inches 

 in front of the outer edge of the platform.. The ceil- 

 ing must be carried around the rafter plate on short 

 furring strips, reaching diagonally from the rear wall to 

 the rafters, so that there will be no obstruction to the 

 circulation of the air. The outside opening should be 

 provided with doors that can be closed tight in cold 

 weather. These doors may consist of inch boards of 

 suitable width. They should not be over six to eight 

 feet long, as a rule, as they are liable to warp if too long, 

 and in that condition will not close the opening tightly, 

 which is quite important in cold weather. When glass 

 sashes are provided under the droppings boards, these 

 may be removed in hot weather, adding greatly to the 

 comfort of the fowls. For cross section of house equipped 

 with rear ventilator, see Fig. 62, page 37, also see Chapter 

 X for detail drawing. 



Straw Lofts 



In cold climates, straw lofts are especially desirable 

 and well worth the additional cost of providing them. 

 A practical type of straw loft is indicated in Fig. 79. 

 This heavy blanket of straw not only retains warmth, 



